Activated carbon immersed in water—the origin of linear correlation between enthalpy of immersion and oxygen content studied by molecular dynamics simulation
文献情報
Artur P. Terzyk, Piotr A. Gauden, Sylwester Furmaniak, Radosław P. Wesołowski, Piotr Kowalczyk
First Molecular Dynamics simulation results of activated carbon immersion in water are reported. Using a Virtual Porous Carbon Model of “soft” carbon the influence of surface oxygen content, distribution of groups and micropore diameter on the enthalpy of immersion is studied. The empirical relation between enthalpy and concentration of surface groups (as well as polar surface area) is reproduced by molecular simulation results. It is shown that for strongly hydrophobic carbons immersed in water, the water–vapour interface inside pores appears. This interface vanishes with the rise in content of surface oxygen. We discuss some nuances of the interfacial region using proximal distribution functions and hydrogen bonds statistics. Finally we conclude that the mechanism of immersion process is in accordance with Pratt–Chandler theory of hydrophobic interactions.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.












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